Method and telecommunications node for information synchronization

• US 20070055701A1
• Filed: 09/08/2005
• Published: 03/08/2007
• Est. Priority Date: 09/08/2005
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Tse, Edwin, Godin, Andre, Gosselin, Nicolas
• Application Number:
  US11/220,558
• Publication Number:
  US 20070055701A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/27 Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor

Abstract

A method and telecommunications node for synchronising the content of a first node database such as for example of a Manager Management Information Base (MIB) with another node'"'"'s database, such as for example an Agent MIB. The first node sends a synchronization request to the second node indicating the time when the first node was last updated. The second node scans through a list of changes dating from its own last update until the first node'"'"'s last update, said scan being performed in a last-in-first-out (LIFO) fashion. If an item was found to be deleted, there is no point in scanning further ahead for creation or changes on this item. If an item was created at a given time, there is no point in scanning further ahead for this item. If an item was changed (i.e. one of its attribute was modified), the scanning continues in order to sum all changes on this item. The second node then sends the sum of creations/changes/deletions for any relevant item to the first node, which in turns stores the information along with the time when the second node was last updated.

Claims

1. A method for synchronisation between a first and a second telecommunications nodes, the method comprising the steps of:

a. responsive to a trigger of a synchronisation between the first and second telecommunications nodes, parsing at the second node an information database from the most recent data item to the oldest data item, and for each parsed item;

a.1. if the item is created and no other occurrence of the data item was encountered before, insuring that the item is included in a result for return to the first node;

a.2. if the item is deleted and no other occurrence of the data item was encountered before, insuring that the item deletion is included in the result list for return to the first node; and

a.3. if the item is updated and no other occurrence of the data item was encountered before, insuring that the item attributes are included in the result list for return to the first node.

2. The method claimed in claim 1, wherein the parsing at the second node of the information database from the most recent data item to the oldest data item is only performed for data items that include update time information that is posterior to a given time stamp.

3. The method claimed in claim 1, further comprising the steps of:

b. receiving at the second node a synchronisation request from the first node, the synchronisation request comprising the given time stamp, which is indicative of a last time the first node was synchronised with the second node; and

c. returning to the first node the result list.

4. The method claimed in claim 1, wherein the first node is a management network Manager, the second node is a management network Agent, the information database is a Management Information Base (MIB) and the data items are Management Objects (MOs).

5. The method claimed in claim 4, wherein the MOs contain an MO identifier, MO attributes and an MO update time.

6. A telecommunications node comprising:

an information database comprising data items;

a processing unit that is configured to act, responsive to a trigger of a synchronisation between the telecommunications node and another telecommunications node to parse the information database from the most recent data item to the oldest data item, and for each parsed item;

if the item is created and no other occurrence of the data item was encountered before, to include the data item in a result for return to the first node;

if the item is deleted and no other occurrence of the data item was encountered before, to delete the data item from the result list for return to the first node; and

if the item is updated and no other occurrence of the data item was encountered before, to include data item attributes in the result list for return to the first node.

7. The telecommunications node claimed in claim 6, wherein the parsing by the processing unit of the information database from the most recent data item to the oldest data item is only performed for data items that include update time information that is posterior to a given time stamp.

8. The telecommunications node claimed in claim 6, wherein the node received a synchronisation request from the other node, the synchronisation request comprising the given time stamp, which is indicative of a last time the other node was synchronised with the telecommunications node, wherein the telecommunications node returns to the other node the result list.

9. The telecommunications node claimed in claim 6, wherein the telecommunications node is a management network Manager, the other node is a management network Agent, the information database is a Management Information Base (MIB) and the data items are Management Objects (MOs).

10. The telecommunications node claimed in claim 9, wherein the MOs contain an MO identifier, MO attributes and an MO update time.